Wang 2262 User manual
•
WANG
.
•
X-Y
DIGITIZER
NOTES
· Model: 2262
• Customer Engineering
Product
Maintenance
Manual
3601
729-0536-A
•
•
•
PREFACE
Second
Edition
(January,
1984)
This
publication
applies
to
the
Wang
Model 2262
X-Y
Digitizer.
Material
in
this
publication
is
reprinted
from and
obsoletes
729-0536 and
729-0535.
Updates
and/or
changes
to
this
document
will
be
published
as
Publication
Update
Bulletins
(PUBs)
or
subsequent
editions.
This
document
is
the
property
of
Wang
Laboratories,
Inc.
All
information
contained
herein
is
considered
company
proprietary,
and
its
use
is
restricted
solely
for
the
purpose
of
assisting
the
Wang-trained
CE
in
servicing
this
Wang
product.
Reproduction
of
all
or
any
part
of
this
document
is
prohibited
without
the
prior
consent
of
Wang
Laboratories,
Inc.
@Copyright
WANG
Labs.,
Inc.
1975, 1984
ii
•
•
•
•
SERVICE
BULLETIN
EDITED
BY
CUSTOMER
ENGINEERING DIVISION
MODEL
2262
X-Y
DIGITIZER
TABLE
OF
CONTENTS
1.
INTRODUCTION
1.1
General
1.
2
Description
1.
3 Model 2262
Specifications
2.
INSTALLATION
3.
OPERATION
3.1
Controls
and
Indicators
3.2
Digitizing
Components
3.3
Principles
of
Operation
3.4
Modes
of
Operation
3.5
Digitized
Readout Format
3.6
Tablet
Magnetizing
4.
MODEL
2262
DIAGNOSTIC
5.
ELECTRICAL
COMPONENTS
AND
TROUBLESHOOTING
5.1
Components
5.2
Troublsehooting
APPENDIX
A-
WIRING
&
SCHEMATICS
APPENDIX
B-
APPENDIX
C-
SIGNAL
MNEMONICS
MODEL
2262
DIAGNOSTIC
NOTICE:
This
document
is
the
property of Weng Laboratories, Inc.
Information contained herein
is
considerad
company
propri·
etary
1nformat1on
and
its use
is
restricted solely
to
the
purnosa of assisting
you
in
sarvic1ng Wang products. Repro-
duction
of
all
or
any part of this
document
is
prohibited
without
the
consent of Wang Laboratories.
N0.64
2
2
2
3
4
6
6
7
8
9
13
13
14
15
15
18
20
31
33
(
)LABOF!ATOF!IES,
INC.
w
ANG
131
NORTH
STREET,
TEWKSIURV,
MASSACHUSETTS
01171.TEL.Ul1711161-4111,
TWX
710
:IQ.l7tl,
TELEX
M-7"21 Printed
in
U.S.A.
13-210~
-~-
--
---··--
--------------------,
MODEL
2262
X-Y
DIGITIZER
1.
I
NT
RO
DUCT
ION
1.1
GENERAL
A
digitizer
is
a
device
which
is
used
to
locate
the
positions
of
points
on
graphic
media
such
as
strip
charts,
graphs,
photos,
engineering
drawings,
and
other
documents,
and
convert
them
into
digital
information
(in
the
form
of
cartesian
coordinates)
which
can
be
transmitted
to
the
computer
for
storage
and
analysis.
The
data
generated
in
this
way
can
be
processed
and
analyzed
in
the
computer,
stored
out
on
disk
or
tape
for
future
use,
or
used
to
replot
all
or
part
of
the
original
document
to
any
desired
scale.
1.2
DESCRIPTION
The
Wang
Model 2262
X-Y
Digitizer
consists
of
a
hand-held
cursor
and pen
stylus,
either
of
which
may
be
used
to
trace
the
data;
a
digitizer
tablet,
on
whose
surface
the
document
to
be
digitized
is
placed;
a
digitizer
chassis,
containing
the
power
supply
and
all
necessary
electronics
for
the
digitizer;
and an
Interface
Controller
Board,
used
to
interface
the
digitizer
to
the
System 2200. A
remote
audio
annunciator
is
available
as
an
option;
the
annunciator
emits
an
audible
"beep"
each
time
a
point
is
digitized,
thus
providing
audible
verification
that
the
digitizer
is
operating
properly.
The
cursor
and pen
stylus,
digitizer
tablet
and
digitizer
chassis
are
manufactured
by Sununagraphics
Corporation
of
Fairfield,
Connecticut.
The
2200
interface
controller
board
is
a 6592
PC
which
is
the
Model
2252A
interface.
2
•
•
•
•
•
•
The
:22b2
Dig~tizcr
is
available
in
three
models.
The Model 2262-1
pruvides
a
digitizing
tablet
20
inches
x
20
inches
(50.8
cm
x
50.8
cm)
in
size;
the
active
digitizing
area
of
400
square
inches
(2,810
square
centimeters)
should
prove
adequate
for
most
applications.
For
large-scale
applications,
tYo
larger
models
are
available.
The Model
2262-2
offers
an
active
digitizing
area
30
inches
x 40
inches
(76
cm
x
101.6
cm)
in
size;
the
Model
2262-3
provides
an
area
36
inches
x 48
inches
(91.4
cm
x 121.9
cm)
in
size.
Each
digitizer
is
shipped
with
two
digit1zing
implements,
a
harid-held
cursor
with
a
bull's
eye
sight,
and a
pen
stylus.
The two
implements
arr•
designed
for
different
types
of
applications,
the
cursor
being
particularly
valuable
for
jobs
which
demand a
high
degree
o~
accuracy,
while
the
pen
stylus
is
most
useful
for
high-speed
data
entry
or
rough
digitizing
work
where
high-speed
manual
operator
movement
is
desirable.
The pen
stylus
is
activated
by
depressing
it
against
the
tablet
surface,
causing
the
inner
shaft
to
retract
and
activate
the
digiti?.er
logic.
Similarly,
the
cursor
is
activated
with
a
Z-axis
pushbutton.
In
addition
to
the
standard
Z-axis
pushbutton,
the
cursor
provides
three
special
button~
called
"flag
buttons",
which
also
can
be
used
to
digitize
points.
Each
flag
button
generates
a
standard
readout
for
the
point
digitized,
but
also
sets
a
unique
flag
bit
in
the
first
digit
of
the
readout
number. The
flag
buttons
are
therefore
quite
valuable
for
signalling
special
conditions
or
operdtions
to
the
controlling
pro~ram,
such
as
rolling
the
axis,
term-
ination
of
job,
pen
up
or
pen
down
on
the
plotter,
etc.
1.3
MODEL
2262 SPECIFICATIONS
Resolution:
100
lines/inch
Linearity:
.08%
of
full
scale
Accuracy:
Less
than
.01"
(.025
cm)
Repeatability:
Less
than
.01"
(.025
cm)
Stability:
Less
thn.n .
01"
(.
025
cm)
J
Repetition
Rate: 200
coordinate
pairs
maximum
Origin:
Lower
left
corner
Tablet
Sizes:
2262-1
2262-2
2262-3
20" x 20"
(50.8
x
50.8
cm)
30" :it 40" (76. 2 x
101.
6
cm)
36" x
46"
(91.4
x
121.9
cm)
Electrical
Requirements:
Operating
Environment:
2.
INSTALLATION
115
VAC
60
Hz
220
VAC
50
Hz
Temperature
50°
to
90°F (10°
to
30°C)
Humidity
20%
to
90%
Background Magnetic
Field
20
gaus
maximum
Remove
the
digitizer
chassis
from
its
shipping
box.
Remove
both
the
top
cover
and
the
bottom
access
panel
on
the
chassis.
Check
that
the
four
ribbon
cables
have
not
unplugged
during
shipment.
The
two
ribbon
cables
that
plug
into
the
top
of
the motherboard
come
from
the
power
supply
and
should
be
taped
to
the
clock
card
(card
in
the
rear
the
chassis)
in
such a
way
as
to
apply
pressure
to
the
connectors
on
motherboard.
The
preamplifier
and
the
pulser
amplifier
ribbon
cables
of
the
plug
into
the
bottom
of
the
motherboard;
they
have
stress
bends
in
them
to
keep
the
pins
tight
in
the
connectors.
Check
that
the
front
panel
indicator
lights
are
connected;
insure
that
the
connector
on
the
rear
of
the
motherboard
is
secure.
Remove
the
tablet
and magnet from
their
boxes;
place
the
tablet
on a
flat
surface.
Bias
the
tablet
as
follows
using
Figure
1:
(Cover
tablet
surface
with
paper
to
keep magnet from
marking.)
4
•
•
•
•
•
•
FIGURE
1
1) Hold magnet as shown. Arrows on magnet must
point
toward
the
tablet
surface.
2) With magnet
against
surface
of
tablet,
wipe
diagonally
from
upper
left
to
lower
right.
3) Once
the
tablet
is
biased,
the
magnet must be removed from
the
general
area
of
the
tablet;
do
no:~
store
magnet
near
the
tablet.
4) Check the
6592
controller
board
for
the
proper
device
address:
SA.
5)
Select
a 10
digit
code
by
depressing
the
8 and 2 dato'!
switches
on
the
6592
board.
No
other
switches
should
be
depressed
at
this
time.
However,
note
that
if
the
SIGN
switch
ts
depressed,
the
sign
of
the
point
being
digitized
will
be
plus
(+)
•
6)
Insert
the
6592
board
into
an
I/O
controller
slot
in
the
2200
CPU.
5
7)
Plug
the
tablet
5
pin
male
connector
into
the
lower
left
female
connector
tn
the
rear
of
the
digitizer
chassis.
8)
Plug
the
cursor
into
the
lower
right
connector
on
the
front
of
the
digitizer
chassis.
9)
If
the
annunciator
option
is
included,
plug
this
into
the
upper
left
connector
on
the
rear
of
the
chassis.
10)
Plug
the
I/O
cable
into
the
6592
I/O
controller
and
apply
power
to
the
digitizer.
11)
Run
diagnostic
test
per
Section
4.
3.
OPERATION
3.1
CONTROLS
AND
INDICATORS
3.1.1
Controls
(a)
Power -
When
pushed
in,
turns
on power.
(b)
Single
Point,
Switch
Stream,
Switch
Stream -Three
pushbutton
switches
used
to
select
one
of
the
three
modes
of
digitizer
~peration.
The
switches
are
ganged so
that
depressing
one
button
releases
one
of
the
others.
A
brief
description
of
switch
operation
is:
Single
Point
-Each
depression
of
the
cursor
buttons
or
pen
stylus
sends
one
point
to
the
2200.
Switch
Stream
-A
continuous
stream
of
points
is
sent
to
the
2200
when
the
cursor
buttons
or
pen
stylus
is
depressed.
Switch
Stream
-A
continuous
stream
of
points
is
sent
to
the
2200
at
all
times.
6
•
•
•
(r)
Clear
-Momentary
pushbutton
that
resets
and
clears
the
digitizer
•
data
registers.
•
(d)
Stream
Rate
Slider
Bar -
Determines
the
rate
at
which
the
digitizer
generates
coordinate
points
when
the
digitizer
is
used
in
the
stream
modes. In
the
extreme
low
position,
the
rate
is
approximately
5
point::;/second;
at
the
extreme
high
position,
the
rate
is
approximately
200
points/second.
3.1.2
Indicators
(a)
2200 Ready
Light
-
Illuminates
when
the
2200
is
ready
to
receive
digitizer
data.
Digitized
points
cannot
be
sent
to
the
2200
unless
the
light
is
illuminated.
(b) Pange
Light
-
Illuminates
when
the
cursor
or
pen
is
positioned
to
produce
a
range
error.
A
range
error
is
generated
when
the
cursor
(c)
or
pen
is
raised
more
than
.25"
(.64
cm)
from
the
tablet
or
positioned
on
the
tablet
beyond
the
extremities
of
the
digitizer
grid
and
an
attempt
is
made
to
digitize.
When
a
range
error
is
generated,
digitizing
to
the
2200
is
i.'.hibited.
Prox
light
-The
proximity
light
is
the
converse
of
the
range
light
and
illuminates
when
L!-.e
cursor
or
pen
is
within
. 25"
(.
64
cm)
of
the
tablet
and
within
the
active
digitizer
grid.
The
proximity
light
is
inactive
in
the
Single
Point
Mode.
3.2
DIGITIZING
COMPONENTS
3.2.l
Description
(a)
Four
Button
Cursor
-The
cursor
contains
a
bull's
eye
reticle,
a
large
square
Z-axis
pushbutton
and
three
smaller
i:'LAG
pushbuttons.
Single
or
..
cream
points
are
primarily
digitized
by
depressing
the
Z-axis
pushbutton.
The
Flag
pushbuttons
cause
special
bits
to
be
•
transr.iitteJ
to
the
2200
CPU
controller
along
with
the
digitized
data.
7
(b) Pen
Stylus
-
The
pen
stylus
is
similar
to
a normal pen
in
i;hape.
The
digitizer
action
is
caused
by
depressing
the
pen
tip
against
the
tablet
which
causes
the
inner
sensor
shaft
of
the
pen
to
retract
1/32''
(.08
cm)
and
make
contact
with
the
digitizer
activation
logic.
3.2.2
Physical
Characteristics
The
cursor
at:d pen
stylus
contain
a
sensing
coil
which
is
used
to
detect
changes
of
flux
that
occur
in
the
tablet.
3.3
PRINCIPLES
OF
OPERATION
In
order
to
understand
the
following
explanation
of
digitizer
tablet
operation,
it
is
necessary
to
define
several
terms
that
are
used
in
the
text.
Domain:
Magnetostriction:
Permeability:
Strain
Wave:
A
small
subelement
that
exhibits
a
state
of
magnetic
behavior.
When
most domains
in
a
ferromagnetic
sub-
stance
are
aligned
in
the
same
direction,
the
ferro-
magnetic
substance
is
said
to
be
magnetized.
A
change
in
the
physical
dimensions
of
a
ferromagnetic
substance
brought
about
by
the
alignment
of
domains
(magnetization).
The
ability
of
a
substance
to
become
magnetized.
A
mechanical
wave
of
energy
which
causes
a momentary
change
in
the
permeability
of
a
substance
and
propa-
gates
through
the
substance
at
the
speed
of
sound
appropriate
to
the
material.
The
digitizer
tablet
contains
a mesh
of
magnetostrictive
wires
(mag
wires)
spaced
.l"
(25.4
mm)
apart.
Two
"send"
wires
are
placed
on
the
perimeter
of
the
tablet.
See
Figure
2.
One
send
wire
is
X and
the
other
is
Y.
The X send
wire
is
pulsed
with
a
current.
This
current
pulse
causes
strain
waves
to
be
propagated
down
all
the
X
mag
wires
at
the
8
•
•
•
•
•
•
speed
of
sound.
If
a
coil
(in
this
case,
the
cursor
or
pen
stylus)
is
within
.25"
(6.4
unn)
of
the
tablet
surface,
it
will
sense
the
change
in
the
permeability
of
the
mag
wires
by
the
strain
waves.
Since
the
speed
of
the
strain
wave
is
known,
the
amount
of
time
between
the
current
pulse
and
the
sensing
of
the
strain
wave
can
be
used
to
determine
the
position
of
the
coil
in
the
X
direction.
Immediately
after
the
X
coordinate
is
de-
termined,
the
Y send
wire
is
pulsed,
and
as
a
result,
the
position
of
the
cursor
or
pen
stylus
on
th~
tablet
can
be
determined.
Y
SEND
WIRE
MAG
WIRES
X
SEND
WIRE
' .
'
+--
+;
~
~~~·---+--
...
-
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..
-.----..-----
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r:
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+-------+----~
f----·-----·t·'.
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......
+ J
.....
-t-
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-t •
-~
• • • • . • • - - t i
-1·-1--.
---· .
4-
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:
..
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•.
f t I 1
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1--~-
--!-
•
t··
1 •
t·
l • ' f ' · • J ' • - ·
··t
• •
•·
t
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t-
I ! •
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'-•~·•~~-:-+'
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j t •
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t
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-
....
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r-
·--+--++ ·
+-
-+---
FIGURE
2
3.
Ii
MODES
OF
OPERATION
The
digitizer
can
be
selected
to
operate
in
three
modes:
Single
Point,
Switch
Stream,
and
Switch
Stream.
These
are
selected
by
depressing
one
of
three
ganged
pushbuttons
on
the
digitizer
chassis
front
panel
.
Depressing
one
button
will
automatically
release
the
other
two.
The modes
operate
as
follows:
9
--------------------------------
3.4.1
Single
Point
Mode
When
either
the
Z-axis
hutton,
one
of
the
flag
buttons,
or
the
pen
stylus
is
depressed,
a
single
point
is
transmitted
to
the
22nn,
if
the
2200
is
ready.
If
the
2200
is
not
ready
at
this
time,
the
pushbutton
or
pen must be
redepressed
when
the
2200 becomes
ready.
The
sign
of
the
readout
number
received
will
always
be
plus
(+).
In
addition
to
the
normal
X and Y
coordinate
values,
the
high
order
digit
of
the
readout
number
will
be
1,
2,
or
4
respectively
if
the
FLAG
1,
FLAG
2,
or
FLAG
3
pushbuttons
are
depressed
on
the
four
button
cursor.
If
the
audio
annunciator
option
is
available
with
the
system
and
connected,
transmission
of
the
single
point
to
the
2200
will
also
cause
an
audio
tone.
If
the
cursor
or
pen
stylus
is
positioned
to
be
in
a Range
error
state,
readout
of
the
point
is
inhibited.
3.4.2
Switch
Stream
Mode
The
digitizer
will
continuously
digitize
points
and
attempt
to
send
them
to
the
2200
at
a
rate
determined
by
the
current
setting
of
the
stream
rate
slider
bar
(varying
from 5
points/second
at
the
low
setting
to
200
points
per
second
at
the
high
setting).
Points
will
actually
be
received
and
processed
by
the
2200
at
a
rate
determined
the
control
program
over-
head
rai:e/point.
(If
a
maximum
digitize
rate
is
desired,
it
can
be
supported
with
the
DATALOAD
or
DATALOAD
BT
commands
available
in
the
2200B
or
the
MAT
I~~UT
command
available
in
2ZOOB
option
1.)
In
switch
stream
mode,
points
will
be
generated
regardless
of
whether
or
not
the
Z-axis/~lag
pushbuttons
or
the
pen
stylus
are
depressed.
They
~·.i.11
however,
affect
tht::
readout
data
as
follows:
1)
2)
Nothing
Depressed*
Z-axis
Pushbutton
or
Pen
Stylus
Depressed
Sign
of
number always Minus
(-).
Sign
of
number always
Plus
(+).
*When
using
the
pen
stylus,
it
may
often
be
lifted
up
move
than
1/
4'' from
the
tablet.
In
this
case,
a
range
error
condition
exists
and
transmission
of
points
is
inhibited.
10
•
•
•
•
•
•
3)
Flag
Push
but
ton
Depressed
Sign
or
number
always
Plus
(+).
In
adaition
the
high
order
digit
of
the
reaJout
number,
DO,
will
be
1,
2
or
b
dep~nding
upon
whether
FLAG
1,
FLAG
2,
or
FLAG
3
is
depressed
re-
spectively.
NOTE:
The
Plus sign or
FLAG
bits
in the
DO
digit
will
remain
set
as
long
as
the respective pushbutton
or
pen
stylus is held
down.
Typically, a
number
of readouts are generally received in
this
status
since the
manual
action of the pushbutton or stylus
is generally
much
slower than the stream
rate.
When
the
cursor
or
pen
stylus
is
positioned
in
a Range
error
state,
the
digitizing
and
readout
of
points
is
inhibited.
If
the
audio
annunciator
option
is
available
with
the
system
and
connected,
an
audio
tone
will
sound
each
time
a
point
is
transmitted
to
the
2200 .
The
switch
stream
mode
is
a
very
flexible
mode
for
digitizing
curves
and
other
continuous
graphical
data.
One
of
the
advantages
of
this
mode
is
that
readouts
are
continuously
available
to
the
2200 and
cursor
action
is
indicated
by
the
sign
change
in
the
readout
numbers.
Therefore,
the
2200
is
never
hung
up
awaiting
a
digitize
point.
This
could
be
extremely
useful
if
for
instance
it
is
desirable
to
use
the
special
function
keys
on
the
2200
keyboard
for
auxiliary
control
functions.
(A
program
loop
can
test
for
inputs
from
both
the
digitizer
and
keyboard.)
3.4.3
Switch
Stream
Mode
This
mode
is
similar
to
switch
stream
mode
in
that
a
continuous
stream
can
be
digitized
and
transmitted
to
the
2200.
It
differs,
however,
in
that
switch
stream
is
generated
only
when
the
Z-axis
pushbutto:
, a
flag
button,
or
the
pen
stylus
is
depressed.
The
digitized
point
stream
will
be
available
for
as
long
as
the
pushbutton
or
stylus
remains
depressed,
and
will
be
inhibited
when
it
is
released.
11
Similar
to
switch
stream
morie,
the
effective
rate
at
which
the
2200
accepts
and
processes
points
is
determined
by
the
overhead
rate/point
of
the
2200
control
program. (Again,
the
maximum
stream
rate
can be
supported
by
use
of
the
DATALOAD
BT,
DATALOAD
and
MAT
rNPUT
command.)
In
switch
stream
mode,
in
addition
to
the
X and Y
coordinates
of
the
digitized
point
sent
to
the
2200 upon
depression
of
a
pushbutton
or
stylus,
the
number
of
readouts
will
have
the
following
format:
1)
2)
3)
Nothing
Depressed
No
points
transmitted.
Z-axis
Pushbutton
or
Pen
Stylus
Sign
of
number
generally
*Plus
(+).
Depressed
*NOTE:
The
sign
of
the
last
readout
received
as
the
pushbutton
or
stylus
is
released
may
occasionally
be Minus
(-)
,
because
of
transient
electronic
conditions.
Flag
Pushbutton
Sign
of
number
generally
*Plus
(+)
Depressed
When
a
stylus
and
high
order
readout
digit,
DO,
generally
**l,
2,
or
4
depending
upon
whether
FLAG
1,
FLAG
2,
or
FLAG
3
is
depressed.
**NOTE:
The
sign
may
occasionally
be
Minus
(-)
and/or
the
selected
flag
bit
not
present
on
the
last
readout
received
as
the
pushbutton
or
stylus
is
released,
due
to
transient
elec-
tronic
conditions.
NOTE:
l
Z-axis
or
flag pushbutton or the
pen
is depressed, the
2200
will receive a
number
of readouts since the
manual
action of
the
pushbutton
or
stylus is generally slower
than
the stream rate.
When
the
cursor
or
pen
stylus
is
positioned
in
a Range
error
state,
the
digitizing
and
readout
of
points
is
inhibited,
regardless
of
whether
or
not
they
are
depressed.
12
•
•
•
•
•
•
The
switch
stream
mode
is
useful
in
digitizing
curves
and
other
continuous
graphical
data
when
it
is
desirable
that
only
pertinent
digitized
points
be
sent
to
the
2200•
3.5
DIGITIZED
READOlIT
FORM~T
For
digitized
output,
the
6592 board
receives
4
digits
for
the
X
value,
4
digits
for
the
Y
value,
a
flag
digit
and a
sign
bit.
The
parallel
input
to
the
6592
interface
is
as
follows:
Sign
DO
Dl
D2
D3
D4
D5
D6
D7
D8
D9
L
'
Not used
X
value
in
BCD
Y
value
in
BCD
___
_,/
v '-----
~----/
v
'-----.flag
digit
'--------cursor
control
information
1.
Single
point
-Always
plus
(+)
2. Switch
stream
-Minus
(-)
when
cursor,
flag,
or
pen
depressed.
Plus
(+)
when
cursor,
flag,
or
pen
depressed.
3.
Switch
stream
-Always
plus
(+)
except
for
last
point
when
cursor,
flag
or
pen
released.
3.6
TABLET
MAGNETIZING
Under normal
conditions,
it
is
not
necessary
to
refresh
the
magnetic
bias
of
the
tablet.
If
a magnet
or
magnetized
article
is
placed
on
the
tablet,
the
remanent
flux
in
th~
mag
wires
could
be
altered.
This would
affect
the
accuracy
of
the
digitizer.
If
any
inaccuracies
should
occur,
re-bias
the
tablet
per
Section
2.
Store
the
magnet
well
away
from
the
tablet
and any
tape
cassettes
or
disk
platters
.
13
4.
MODEL
2262
DIAGNOSTIC
OPERATING
INSTRUCTIONS:
1) Plug
cursor
into
digitizer
and
place
near
center
of
tablet.
2)
Select
the
Switch Stream
Mode
on
the
control
panel.
3) Load
the
2262
diagnostic
(See
APPENDIX
C).
RESET,
RUN,
EXECUTE.
The
following
is
displayed
on
the
CRT:
SIGN
BIT
(NEG-NO
BUTTONS)
20
x
20
In.
Tablet
30
x
40
In.
Tablet
36
x
48
In.
Tablet
2262
TEST
FLAG
SWITCH
(0,1,2,4)
0
X-VALUE
xxxx
X-LIMITS
0000-1999
0000-3999
0000-4799
WHEN
TEST
IS
COMPLETE
HIT
RESET
&
SPECIAL
FUNCTION
KEY
15.
Y-VALUE
yyyy
Y-LIMITS
0001-2001
0001-3001
0001-3601
4)
The
2200
should
be
reading
coordinates,
the
2200
ready
light
on
the
digitizer
should
be
flashing
and
the
proximity
light
should
be on.
5) Depress
the
Z-axis
button.
Insure
that
the
sign
changes from minus
to
plus
and a
set
of
coordinates
is
constantly
being
displayed.
Release
Z-axis
button.
6)
Depress
Flag
#1. Check
for
sign
change and
that
flag
bit
changes
to
1.
Release
Flag
#1
button.
7)
Depress
Flag
#2. Check
for
sign
change and
that
flag
bit
changes
to
2.
Release
Flag
#2
button.
8) Depress
Flag
#3. Check
for
sign
change and
that
flag
bit
changes
to
4.
Release
Flag
#3
button.
9)
Place
cursor
at
left
margin
approximately
in
the
center
of
tr
..
e
tablet.
14
•
•
•
•
•
•
10)
Select
the
High
Stream
Rate.
Move
the
cursor
very
slowly
from
left
to
right
checking
that
X
begins
at
coordinate
0000 and
counts
in
units
up
to
0009.
Ch~ck
all
digits
from
tens
to
thousands
by
continuing
to
move
the
cursor
toward
the
right
margin.
The
last
count
in
the
X
direction
is
1999
for
a
2262-1.
11)
Place
the
cursor
at
the
bottom
margin
near
the
center
of
the
tablet.
Move
the
cursor
very
slowly
from
the
bottom
of
the
tablet
to
the
top
checking
that
the
Y
begins
at
coordinate
0001 and
counts
in
units
up
to
0009. Check
all
digits
from
tens
to
thousands
by
continuing
to
move
the
cursor
up
the
tablet.
The
last
count
in
the
Y
direction
is
2001
for
a
2262-1.
12)
Select
the
Single
Point
Mode.
Digitize
approximately
5 random
points
on
the
tablet
by
depressing
the
Z-axis
and
flag
switches
while
moving
the
cursor.
Enstire
that
the
Flag
bit
and
coordinates
change
each
time
the
appropriate
switch
is
depressed.
The
SIGN
bit
should
change
only
the
first
time
a
button
is
depressed.
13)
Select
the
Switch
Stream
Mode.
While
depressing
the
Z-axis
switch,
move
the
Stream
Rate
Slider
Switch
from low
to
high
range,
checking
that
the
number
of
points
being
digitized
increases
as
the
slider
is
moved
to
the
high
range.
14)
Remove
the
cursor
and
connect
the
stylus
to
the
front
control
panel.
15)
Select
the
Switch
Stream
Mode.
Check
that
the
sign
bit
changes
from minus
to
plus
when
the
stylus
is
depressed
on
the
tablet.
Check
that
coordinates
are
being
read
by
the
2200.
5.
ELECTRICAL
COMPONENTS
AND
TROUBLESHOOTING
5.1
COMPONENTS
The
Summagraphics
digitizer
interior
chassis
contains:
(a)
A power
supply
mounted on
the
rear
of
the
chassis
that
supplies
+5VR
internally,
+5VR
externally,
+15VR,
-15VR and
+lBOVUR.
15
(b) A
motherboard
consisting
of:
1)
Four
switch
filters
to
prevent
switch
bounce
transients
from
the
cursor
or
stylus;
2) A
switch
bracket·
for
mode
selection;
3)
A
slider
pot
for
number
of
points/second
to
be
digitized;
4)
three
front
panel
lights;
and
5)
Connectors
for
4
PC
logic
boards.
(c)
A
pulser
circuit
mounted
to
the
rear
of
the
chassis
under
the
motherboard
with
a 5
pin
female
connector
for
the
tablet.
(d) A
preamplifier
circuit
mounted
to
the
front
of
the
chassis
under
the
motherboard
with
a 5
pin
female
connector
for
the
cursor
or
stylus
pickup.
(e)
Four
PC
boards
for
the
logic
and
timing
sequences.
From
the
front
to
the
rear
of
the
chassis,
the
boards
are:
1)
Control
Board #02-024 - A
logic
board
that
controls
the
switches
and
indicators
on
the
front
panel,
the
switches
on
the
cursor
and
controls
the
clock.
The
Jl
jumpers on
the
control
board
must be
set
up
for
the
correct
size
tablet:
(a)
For
tablets
from
11"
to
30"
wire
Jl
as
shown
below:
Pin
1 - 16
2 - 15
4 - 13
6 - 11
7 -
10
(b)
For
tablets
from 30"
to
48"
wire
Jl
as
shown below:
Pin
1 - 16
2 - 15
3 - 14
4 - 13
5 -12
16
•
•
•
•
•
•
2)
X
Counter
Board #02-009 - A
logic
board
that
counts
up
from
0
to
1 minus
overflow
•
The
X
board
must be
set
up
for
the
proper
size
tablet.
Jl
and J2 must be
wired
as
follows:
2262-1
J-1
2262-2 2262-3
J-1
Jumper
Pin
7-10.
Tie
Pins
1,2,3,4,
5,6,8
together.
J-1
Jumper
pin
11
to
pm
6.
Tie
Pins
1,2,3,4,5,
7 and 8
together.
Jumper
Pin
11
to
pin
6.
Jumper
Pin
9
to
pin
8.
Tie
Pins
1,2,3,4,5
and
7
together.
J-2
Tie
Pins
9,10,11,
12,13,14,15,16
to-
gether
.
J-2
SAME
J-2
SAME
3)
Y
Counter
Board #02-016 -A
logic
board
that
counts
down
to
1 from
overflow
plus
1.
The
Y
board
must be
set
up
for
the
proper
size
tablet.
J3
and
J4
must be
wired
as
follows:
2262-1 2262-2
J-3
J-3
Jumper
Pin
13
to
2262-3
J-3
Jumper
Pin
13
to
pin
14
Tie
a
lOK
l/SW
Res. between
Pins
3 and 14.
pin
14
and
tie
a
lOK
l/8W
resistor
between
Pins
14
and
3.
Jumper
Pin
15
to
pin
16
and
pin
16
to
pin
2. Jumper
Pins
8,9,10,11
and
12
together.
and
tie
a
lOK
l/8W
resistor
between
Pins
14
and
3.
Tie
Pins
2,15,16
together.
Tie
Pins
4 &
13
together.
Tie
Pins
8,9,10,
11,12
together.
17
Jumper
Pin
10
to
pin
11
tie
a
lOK
l/8W
resistor
between
Pins
10 and
7.
Jumper
Pin
8
to
pin
9,
12
to
pin
6 and Jumper
2
to
pins
15
and
6.
and
pin
pin
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